Non-invasive prenatal testing (NIPT) for a panel of 25 single gene disorders became available in Western Australia in 2020 and potentially may be able to test for panels of hundreds of disorders as is the case with reproductive carrier screening. How this information would be used by parents in a population screening model is unknown. We used a phenomenological approach to explore retrospectively whether mothers of children with single gene or chromosomal disorders would have wanted to know about their child’s genetic diagnosis prior to delivery. Themes were identified such as having a child with a de novo disorder and effect on pregnancy outcomes in hypothetical situations, impact on family function, the diagnostic journey and personal growth. These themes related to both the concept of expanded NIPT (ENIPT) and the situation of having a child with a de novo genetic disorder that could now hypothetically be detected through ENIPT. Opinions were divided about whether participants would have wanted to know about their affected child’s condition, indicating any expanded NIPT testing panels would need to be offered in the context of an appropriate comprehensive counselling program. How this would be provided on a population screening level and the role of genetic counselling needs further exploration.